Incubator-alarm.



Patented Feb. 8, 1910.

1 attenua/ttyl.

UNITED sTATEs 'PATENT orrioa PRRY FLORA, F OXVINGSVILLE. KENTUCKY.

INCUBATOR-ALARM.

specification of Letter-s Patent.

.'nlication filed April 16, 1909.

Serial No. 490.279.

To all whom lit may concern:

Be 1t known that l, Planar Fauna, citizen ot' the United States. residing at Owingsville, in the county of Bath and Stateiotf.

attachment to an incubator for sounding an l alarm in case the tei'nperature of the incu bator rises above or falls below the predetermined degree.

A further object of the invention is to provide a signal or alarm including a standard having spaced contacts slidably mounted thereon and co-acting with a. contact member carried by the' damper actuating bar, said movable contacts being adjustable vertically of the standard and adapted to close the circuit through the signal bell and sound the alarm.

j A still further object of this invention is generally to improve this class ot'devices so as to increase their utility, durability and eticiency, as well as to reduce the cost of manufacture.

Further objects and advantages will appear in the following description, it being understood that various changes in form, proportions, and minor details of construction may be resorted to within the scope of the appended claims.

A For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a perspective view of a signal or alarm constructed in accordance with my invention showing the same in position on an incubator; Fig. 2 is an enlarged side elevation partly in section of the standard showing the position of the movable Contact with respect thereto; Fig. 3 is a transverse sectional view take-n on the line 3-*3 of orresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the saine reference characters.

The thermostatic alarm forming the subject matter' of the present invention, is princajpally designed for attachment. to an incubator and by wa'y ot illustration is shown in connection with an incubator of the ordinary construction in which designates the body portion. 5 the lamp casing, and 7 the j regulator bar having one end thereof con- 'j nccted with the damper S audits opposite g end connected with a thermostat of any apl proved construction. c

l The device comprises a. standard 9 having a suitablehase 10 for attachment to the top ot' the incubator and provided with a longitudinally disposed slot 1l and spaced flanges 12 defining a guiding groove for the reception of a. sliding block 13., Extending laterally from the block 13 are spaced arms arm is provided with a. movablek contact"17 preferably in the torni of a screw as shown. A lock nut 1S engages the threads of the screw 1.7 and is adapted to bear against the arm 15 for lcking the relativel`4 movable contact 17 in adj usted position. xtending through the slot 1l is a clamping screw 19 whiclnengages a correspondingly threaded opening in the block 13 so that the block maybe adjusted.vertically ot' the standard and securely locked in adjusted position.

Connected with a binding screw Q0 on the base or 'support 10 of the standard is one terminal oi" an electrical circuit including a battery 21. tue other terminal of the circuit being connected with ther bracket 22 of the damper actuating bar 7. Connected in the circuit is a bell or other suitable signal 23 and a switch 2l by means ot which the circuit may be interrupted to cut out the alarm when desired. Secured to the bai-'7 at a point adjacent the free end thereof is a oi? a. 'fiat rip of .metal to the iiXed end ot' which is Iiivotallysecured a clip 2G which latter is provided with a socket for the reception of the bar 7 and is locked in en gagement with said bar by means. of a clamping screw' 27. The free end of the contact member or bar 25 terminates in an enlarged head 28 adapted to close the cur rent through the Contact members 16 and 17 when the temperature of the incubator rises above or falls below a predetermined degree thereby to notify the operator or attendant of such change in temperature and thusv prevent injury to the eggs within the incubator.

atented Feb. h. 1910.

1l and ll5 to one of which is secured a rela# tively stationary contact 16, while the other contact member-25 preferably in ttlie torni 'When the temperature of the incubator is normal the enlarged head 9,8 of the contact memberfQ is disposed intermediate of -the contacts 16 and 17. Should the temperature fall below a predetermined degree, however, the head 28 will engage the lower contact 16 and close the circuit through the conductor 29, battery 21 and bar 7 and sound the signal bell 23. Should the temperature of the incubator rise above normal the circuit will be closed through the upper t, contact member 17, battery 21 and bar 7 device extremely sensitive in operation.l

While the-signal or alarm is shown in connection with an' incubator, it will of course be understood that it may be used with equally good results wherever a device of this character is ,desired `for sounding .an alarm upon the rise or tall of the temperature.

Having thus described the invention, what is claimed as new is: s

el. The combination with a movable darnper actuating bar, of a standard having spaced guide iia-nges connected at their upper ends by a transverse strip constituting a stop, a block slidably mounted between said flanges, and provided with laterally extending arms, a relatively stationary contact carried by one of the arms, a screw threaded in the other arm4 and constituting a movable contact, a lock nut engaging thethreads of the screwfor locking the movable contact 1n adjusted position, and a contact carried by and disposed at substantially right angles to the damper actuating bar and adapted to engage the contacts on the movable block for closing the circuit, thereby to sound an alarm.

2. The combination with a movable damper actuating bar, of a standard having guide flanges spaced apart at their lower ends and connected at their upper ends by a transverse strip to form a stop, a block slidably mounted between said ianges and provided with integral laterally extending arms, l

uamoua a relatively stationary contact' secured to one i of the arms, a screw threadedvin the other arm a'nd constituting a movable contact, a clamping nut engaging the threads of the screw for locking the movable contact in adj usted position, means for locking both arms in diii'erent positions of adjustment with relation to the height of the standard, and a flat strip of metal detachably secured to and a5 disposed at right angles to the damper actuating bar and ladapted to engage the contacts on the block for closing the circuit thereby to sound the alarm.

3. The combination with an incubator, of a damper actuating bar, a standard havin ,a base secured to the incubator and provi ed with a binding screw, spaced contacts adjustable on the standard, an electricalfcircuit having one terminal thereof secured to the binding screw ofthe standard and its `op posite end connected with the actuatin bar, said electrical circuit including a signa and switch, a contact member detachably secured to the actuating bar and provided with a head operating between and adapted toengage the contacts on the standard for closing the circuit and a clip pivotally mounted on one end of the contact member and having a socket formed therein for the reception of the damper actuating bar.

4. The combination with an incubator, including a damper actuating bar, of a standard secured to the incubator and provided with spaced vertically adjustable contacts, an electrical circuit connected with the standard and actuating bar respectively and including a signal, a contact member comprising a flat strip of metal detachably secured to and disposed at a right angle to the actuating bar and provided with an enlarged head adapted to engage the contacts on the standard for closing the circuit, a clip pivotally mounted on one end of the fiat strip of metal. and having its intermediate portion provided with a socket for the reception of the damper actuating bar, and a fastening device extending through the flat 'metal strip and the adjacent end of the clip actuating bar.

In testimony whereof I aHiX my signature in presence of two witnesses.

y PERRY FLORA.V [Lf s] Witnesses:

JOHN A. RAMSEY, O. B. BROTHERS. 

